650021630 has 16 divisors (see below), whose sum is σ = 1220910624. Its totient is φ = 248703840.

The previous prime is 650021611. The next prime is 650021633. The reversal of 650021630 is 36120056.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 650021596 and 650021605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650021633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1412861 + ... + 1413320.

It is an arithmetic number, because the mean of its divisors is an integer number (76306914).

Almost surely, 2^650021630 is an apocalyptic number.

650021630 is a deficient number, since it is larger than the sum of its proper divisors (570888994).

650021630 is a wasteful number, since it uses less digits than its factorization.

650021630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2826211.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 650021630 is about 25495.5217636353. The cubic root of 650021630 is about 866.2487138250.

Adding to 650021630 its reverse (36120056), we get a palindrome (686141686).

The spelling of 650021630 in words is "six hundred fifty million, twenty-one thousand, six hundred thirty".